Three hundred drones hit the skies a few nights ago above Zhuhai, China, in a show of thanks to the medical team on the coronavirus frontline in Hubei province, which was hardest hit during the outbreak. The drones put on a synchronized light show that filled the sky with animations.

In photos and videos of the event, the drones appear forming various images, including a woman taking her mask off, stars, a bear with the words, “Welcome,” and various other images related to the medical workers.